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authorVincent Ambo <mail@tazj.in>2022-10-06T14·22+0300
committerclbot <clbot@tvl.fyi>2022-10-08T17·27+0000
commit1e2d323a7c5b554f69902987b57c9d47d57e7eea (patch)
treef75871cc46781197250b2dce238171b4b297c979 /.rgignore
parent70427fd93470536c36b2fa8a6c9446f746dcfbec (diff)
feat(tvix/eval): fancy-format parse errors returned by rnix r/5063
This change is quite verbose, so a little bit of explaining:

1. To correctly format parse errors, errors must be able to return
   more than one annotated span (the parser returns a list of errors
   for each span).

   To accomplish this, the structure of how the `Diagnostic` struct
   which formats an error is constructed has changed to delegate the
   creation of the `SpanLabel` vector to the kind of error.

2. The rnix structures don't have human-readable output formats by
   default, so some verbose methods for formatting them in
   human-readable ways have been added in the errors module. We might
   want to move these out into a submodule.

3. In many cases, the errors returned by rnix are a bit strange - so
   while we format them with all information that is easily available
   they may look weird or not necessarily help users. Consider this CL
   only a first step in the right direction.

Change-Id: Ie7dd74751af9e7ecb35d751f8b087aae5ae6e2e8
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6871
Reviewed-by: sterni <sternenseemann@systemli.org>
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
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